app-starlock/lib/talk/udp/io_udpSender.dart

import 'dart:convert';

import '../../blue/io_tool/io_tool.dart';
import 'io_udpType.dart';

abstract class IOData {
  List<int> messageDetail();
}

abstract class UDPSenderProtocol extends IOData {
  // var uint8View1 = Uint8List(300);

  CommandUDPType? commandType; //指令类型
  // final List<int> header = [0XEF, 0X01, 0XEE, 0X02]; //帧头 固定取值 0XEF01EE02，长度 4 字节
  // final int ask = 0X01 ; //  包类型：0X01 表示请求包，0X11 表示应答包，长度 1 字节

  List<int>? commandData = []; //数据块

  UDPSenderProtocol(this.commandType) {

  }

  // 拼装数据
  List<int> packageData() {
    commandData = messageDetail();
    List<int> commandList = [];

    var cID = "XXXCID";
    commandList.addAll(utf8.encode(cID));
    commandList = getFixedLengthList(commandList, 6 - utf8.encode(cID).length);

    // 数据块
    commandList.addAll(commandData!); //数据块
    // AppLog.log("commandList:$commandList");
    return commandList;
  }


}